From: Ido Schimmel Date: Wed, 21 Aug 2024 12:52:48 +0000 (+0300) Subject: ipv4: Unmask upper DSCP bits in RTM_GETROUTE input route lookup X-Git-Tag: v6.12-rc1~232^2~198^2~3 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b1251a6f1a9b475725a097e75196ee105076cbd1;p=thirdparty%2Fkernel%2Flinux.git ipv4: Unmask upper DSCP bits in RTM_GETROUTE input route lookup Unmask the upper DSCP bits when looking up an input route via the RTM_GETROUTE netlink message so that in the future the lookup could be performed according to the full DSCP value. No functional changes intended since the upper DSCP bits are masked when comparing against the TOS selectors in FIB rules and routes. Signed-off-by: Ido Schimmel Reviewed-by: Guillaume Nault Acked-by: Florian Westphal Reviewed-by: David Ahern Link: https://patch.msgid.link/20240821125251.1571445-10-idosch@nvidia.com Signed-off-by: Jakub Kicinski --- diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 73bb61162445f..524b70ab77a0e 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -3286,7 +3286,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, skb->dev = dev; skb->mark = mark; err = ip_route_input_rcu(skb, dst, src, - rtm->rtm_tos & IPTOS_RT_MASK, dev, + rtm->rtm_tos & INET_DSCP_MASK, dev, &res); rt = skb_rtable(skb);